Diğer Bifurkasyon Stentleme Teknikleri
Özet
Koroner arter bifurkasyon lezyonlarının tedavisinde kullanılan alternatif ve nadir çift stentleme teknikleri, bunların tarihsel gelişimleri, adım adım uygulama basamakları ve karşılaşılan teknik zorluklar detaylı bir şekilde incelenmektedir. Çalışmada ilk olarak, tarihsel öneme sahip olan ve Medina 1,0,0 lezyonları için geliştirilen Skirt (Y-Stent) tekniği ile bu yöntemin uzun dönem klinik sonuçları iyileştiren güncel modifikasyonları ele alınmıştır. Ardından, her iki dala erişimin prosedür boyunca korunmasını sağlayan, kılavuz katetere eş zamanlı iki stentin yüklenmesiyle uygulanan V stentleme (≤5 mm örtüşme) ve Simultane Kissing Stent (SKS) (>5 mm örtüşme) teknikleri, avantajları ve barotravma gibi kısıtlılıklarıyla açıklanmıştır. Yan dal ostiumundaki restenoz sorununu çözmeyi amaçlayan, karinanın tamamen stent stratlarıyla kaplandığı Flower Petal ve ana damarda daha az metal yükü barındıran modifiye Flower Petal teknikleri ile ostiumun tam kaplanmasını hedefleyen, özellikle 70 dereceden büyük bifurkasyon açılarında önerilen Szabo çift stent tekniği adım adım özetlenmiştir. Son olarak, günümüzde güncel stent tasarımları ve değişen balon teknolojileri nedeniyle pratik olarak kullanılmayan Trouser-Like stentleme gibi çok nadir yöntemlere değinilmiştir. Tüm bu karmaşık süreçlerde lezyon hazırlığının iyi yapılmasının, doğru stent boyutlandırılmasının, proksimal optimizasyon (POT) ve kissing balon (KB) dilatasyonunun optimal klinik sonuçlar açısından hayati önem taşıdığı vurgulanmaktadır.
Alternative and rare double stenting techniques used in the treatment of coronary artery bifurcation lesions are comprehensively examined, detailing their historical development, step-by-step procedural steps, and technical challenges. The study first discusses the Skirt (Y-Stent) technique, which holds historical significance and was developed for Medina 1,0,0 lesions, along with its modern modifications that improve long-term clinical outcomes. Next, the V-stenting (≤5 mm overlap) and Simultaneous Kissing Stent (SKS) (>5 mm overlap) techniques are explained, both performed by simultaneously delivering two stents through a guide catheter to maintain continuous access to both branches throughout the procedure despite limitations like barotrauma. To address the issue of restenosis at the side branch ostium, the Flower Petal and modified Flower Petal techniques—which completely cover the carina with stent struts while reducing metal load—and the Szabo double stent technique, recommended for bifurcation angles greater than 70 degrees to ensure precise ostial coverage, are summarized step by step. Finally, very rare methods that are practically obsolete today due to contemporary stent designs, such as the Trouser-Like stenting technique, are mentioned. Across all these complex bifurcation stenting processes, proper lesion preparation, accurate stent sizing, proximal optimization technique (POT), and kissing balloon (KB) dilatation are vital for achieving optimal clinical outcomes.
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